What happen to the glowing wood splint when it is inserted inside the test tube?

Q: Explain the principle of working and operation of Dye Penetration Technique Inspection with neat…

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Q: The ___________ color test is used to locate and characterize seminal stains.

A: The seminal stain has a yellowish-grey hue and resembles the shape of a counter map as seen with the…

Q: In HPLC, why is purging being done before analysis of samples. Outline the procedure on how purging…

A: High-performance liquid chromatography (HPLC) is one of the separation technique used to analyze of…

Q: What is the importance of paper chromotography?  What is the usage of paper chromotography in the…

A: Paper chromatography is a chromatography technique that is used for separating colored pigments…

Q: Screen. 7 With increasing polarity of solvent the

A: UV-Vis Spectroscopy can be defined as a technique that is used for measuring amount of light…

Q: What is the benefit of using fluted filter paper instead of not folding it?

A: “Fluted “ filter paper (LEFT) is used when we wish to separate a liquid and a solid, keeping the…

Q: What happens if the spots are made too large when preparing a TLC plate for development?

A: This question is related to chromatography.

Q: PURITY TEST Instructions: Note the REFRACTIVE INDECES of each of the samples and solve for their %…

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Q: Why should you place the test tube at an angle over the flame?

A: Answer of the question given below,

Q: Distinguish between electrostatic and electrophoretic coating

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Q: What is the importance of loss on drying test?

A: Concepts of loss on drying test.

Q: what is the arrow pushing mechanism for this process?

A: The selectivity of electron transfer from SmI2 depends on ligands and additives, solvent, and method…

Q: What is the purpose of drying the remaining solid after extraction under a heat lamp?

A: The process, in which water and other solvent is evaporated from the solid-liquid mixture to form…

Q: What are the applications of hplc?

A: High Performance liquid chromatography (HPLC) also known as High pressure liquid chromatography, is…

Q: Why should the spatula used for spooning solid chemicals from a reagent bottle be clean and dry?

A: If it is not clean and dry  ,you will contaminate the reagent. We were always taught to never to put…

Q: When would you use split, splitless, or on-column injection?

A: Split injection: This is ordinary mode for open tubular columns and it is best for analyte with high…

Q: what happens if i heat a pinch of benzoic acid in a clean, dry test tube for two minutes

A: when benzoic acid is heated in a clean dry test tube for two minutes it melts because its melting…

Q: What are the two most common types of secondarystructure?

A: The most common types of secondary structures are the α helix and the β pleated sheet.

Q: Chromatography Question: What happens to leaves in autumn?

A: Leaves in autumn

Q: Post-lab Questions: does this say about the purity of your solid?

A: Answer of 1st question as per guidelines can only answer 1 if you want to ask more send them one by…

Q: negative absorbance,

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Q: State the different between a dehydrating agent and a drying agent

A: Dehydration is a chemical process. It involves the erosion of water which is chemically associated…

Q: The purpose of fluting filter paper.

A: fluting filter paper when performing a gravity filtration it means folding a filter paper to give a…

Q: Explain how solvent trapping and cold trapping work in splitless injection.

A: In Gas chromatography both split and splitless injection takes place. Split injection is used when…

Q: Fill in the blanks: is applied when TLC will be used to isolate compounds. It uses a plate.

A: Thin layer chromatography is a technique used to isolate non volatile mixtures.

Q: What is the purpose of chromic acid test? What is the evidence of positive result?

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Q: What method was used in the experiment to determine the boiling point of a sample? Select one: A.…

A: Here I have justified the experiment to determine the boiling point of sample

Q: How do you remove Prussian blue stain?

A: Prussian blue is a dark blue dye that is produced on the oxidation of ferrous ferrocyanide salts.…

Q: Name the water purified above separating technique

A: WATER PURIFICATION The process of purifying water involves taking out unwanted chemicals, biological…

Q: phosphorous fertilization

A: In this question we have to explain the effect of 9 levels of phosphorus fertilization on wheat…

Q: HO and ?

A: Alcohol can be defined as an organic compound in which carbon atom is attached to hydroxyl group.

Q: For what purpose Biuret test is used?

A: Biuret test: It also known as Piotrowski’s test. In protein, presence of amide group bends over the…

Q: What is the use of the glass rod in transferring liquid reagents?

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Q: what will produce a smaller Rf value if the solvent and paper are both changed?

A: Increasing the polarity of solvent will result in increase in Rf value as the compound in even for…

Q: What are the benefits of howard formula compared to ficher projection formula

A: Introduction :  Howarth projections are common way to write the structural formula of sugars in…

Q: Compare and Contrast any two microscopy techniques.

A: There are three main types of microscopy: Optical microscopy Single molecule microscopy Stimulated…

Q: Importance of Water Sampler

A: To observe and measure how water quality changes over time.

Q: improve

A: We know that resolution is a measure of how well two Elution peak can be differentiated in…

Q: What is magnesium sulfate used for at the end of the extraction? How can it be removed?

A: Magnesium sulphate is a drying agent, 8t is used to remove the water from organic extract. Magnesium…

Q: Explain briefly a proper technique to use burette

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Conclusion about Types of Water Sampler

A:

Q: What happens if the spots are made too small when preparing a TLC plate for development?

A:

Q: how does the intermolecular force of attraction lead to stain removal? state reference

A: Intermolecular forces are the type of forces operating in between the atoms or ions of different…

Q: Identification of spots on the TLC plate is done by all of the following EXCEPT O Spraying with…

A: TLC is thin layer chromatography used to know the components in mixture and generally used to check…

Q: Why should you leave the crucible cover ajar while heating the sample?

A: In chemistry it is needed to heat a hygroscopic ionic compound to get the water out, and it says to…